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ilniirn *rares IIAVILAI-I Gr. BROWN, OF ST. LOUIS, MISSOURI, ASSIGNOR TOTI-IE BROWN SIGHT FEED LUBRIOATOR COMPANY, OF SAME PLACE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 554,439, dated February11 1896.

Application filed January l5, 1894:. Renewed July 19, 1895. Serial No.556,520. (No model.)

To all whom it may concern.-

Be it known that I, HAVILAH G. BROWN, of St. Louis, State of Missouri,have invented certain new and useful Improvements in Sight-FeedLubricators, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to an improved sightfeed lubricator; and itconsists in the novel construction, combination, and arrangement ofparts, hereinafter described and designated in the claim, andillustrated in the accompanying drawings, in which y Figure l is a sideelevation of my improved invention, the same being connected to asteam-pipe leading to the cylinder of an ordinary engine, and alsoshowing said invention connected to an oil-tank, a portion of said tankbeing in section to more clearly show the connections oi' thesteam-pipes therewith. Fig. 2 is a transverse section of the improvedlubricator, said section being taken on the line 2 2 of Fig. 3. Fig. 3is a vertical longitudinal central section of the improved lubricator,more clearly showin g the construction of same. Fig. 4 is a transversesection of the improved lubricator, taken on the line d 4 of Fig. 3.Fig. 5 is a like section `taken on the line 5 5 of Fig. 3.

designates the lubricator, which is constructed in the manner now to bedescribed.

2 designates the frame,\vhich is constructed of a'single piece of castmetal. The upper end, 3, and the lower end, i, of said casting arerectangular in form, and they are held together by four curvilinearstrips 5. By the construction of these curvilinear strips there will bea space 6 formed between the ends 2 and 3 of said casting. Ascrew-threaded bore 7 is formed in the upper side of the end piece3,.which projects into said end and terminates a suitable distance abovethe lower end of said end piece 3, so as to form a seat S therein.Located in this screw-threaded bore 7 is a screw-threaded plug 9, whichis of suitable size as to iit in said bore, and a square projection 10is formed in the upper end thereof to be engaged bya wrench of ordinaryconstruction for screwing said plug into said bore. Said plug is not aslong as the bore 7 is deep, so that aspace will be formed between theseat 8 and the lower end of the plug when said plug is screwed intoposition. (See Fig. 3 for illustration.)

A round depression l1 is formed in the center of the lower end of theplug 9, the same in circumference as the sight-tube 12.. The purpose ofthis depression is to tit over the adjacent end of said sight-tube andaid in making a steam-tight joint, `said sight-tube being constructed ofglass or othersuitable transparent material.

A ring of suitable packing 13 is placed between the adjacent end of theplug 9 and the seat 8, which also aids in making a steamtight joint whensaid plug is screwed in position, as illustrated in Fig. 3.

A suitable opening 14 is formed in the seat 8 to allow the adjacent endof the sight-tube 12 to pass within the bore 7.

An annular groove or depression l5 is formed in the outer periphery ofthe plug 9 adjacent its lower end, and a series of radial openings 16project inward from said annular depression or groove and register witha bore 17 formed in the center of said plug, the bore 17 terminatingwithin the plug a short distance above the radial openings.

Cast integral with one side of the end piece 3 in such a position thatthe bore 18 therein will register with the annular groove or depression15 isa boss 19,which is screw-threaded on its outer periphery to allow acoupling 2O to be connected thereto, said coupling connecting the pipe21, which leads from the steam-pipe 22, to the boss 19, the steam-pipe22 leading to the cylinder of an engine or any other device that isdesired to be lubricated.

Formed in the lower end of the end piece 4t of the lubricator is ascrew-threaded bore 123, which terminates a suitable distance from theupper end of said casting to form a seat 24 therein.

25 indicates a plu g, which is screw-threaded Ioo a suitable distance onits outer periphery and of such size as to iit within the screw-threadedbore 23, and of such length that when placed within said bore, asillustrated in Fig. 3, the upper end thereof will terminate a suitabledistance back from the seat 24 so as to form a space between theadjacent end of said plug and the adjacent side of said seat. Arounddepression 26 is formed in the upper end of the plug 25, the same incircumference as the sight-tube l2 and constructed to be engaged bytheadjacent end of said sight-tube. The purpose of this depression is toallow said sight-tube to project within said plug and thus aid in makinga steam-tight joint at this point. Suitable packing 27 is placed withinthe annular space between the end of the plug and the adjacent side ofsaid seat 24, so that when said plug is in the position illustrated inFig. 3 said packing will aid in making a steam-tight joint, a suitableopening 28 being formed within the seat 24 to allow said sight-tube topass through into the bore 23.

A vertical central bore 29 is formed in the plug 25, which terminatesadjacent the upper end of said plua 25, and an annular depression 30 isformed within the plug around the upper end of said bore. The upperportion of said bore 29 is screw-threaded to admit the screw-threadedportion 31 of the valvestem 32.

Formed on the upper end of the plug within the depression 2G is aprojection 33, and a vertical bore 34 is formed in said proj ection,which terminates within the bore 29, it being a suitable amount smallerthan said bore 29 so as to form a seat 35 thereon, which is engaged bythe conical end of the valvestem 32. The lower end of said stem isprovided with a hand-wheel 3G for manipulating said stem.

37 indicates a conical-shaped nozzle, the lower end of which isscrew-threaded on its outer periphery and is engaged by the screwthreadswithin the screw-threaded portion of the bore 34, said bore 34 being asuitable amount larger at its upper screw-threaded end, so that whensaid nozzle is placed therein the bore within the nozzle will be inalignment with the lower end of the bore 34.

A boss 3S is formed on the lower end of the plug 25, the outer peripheryof which is screwthreaded to allow a stufng-box, such as 39, to beconnected thereto. The purpose of this stuffing-box is to make asteam-tight joint where the valve-stein 32 projects from the boss 33 toprevent leakage of oil and steam through the bore 29.

40 indicates an annular groove or depression formed in the outerperiphery of the plug 25, adjacent the upper end thereof, and a seriesof radial openings 4l extend from said annular groove into the annulardepression around the upper end of the valve-stem 32.

Formed on the end 4 of the lubricator so as to be parallel with the boss19 is a boss 42. This boss is constructed with a bore 43, whichregisters with the annular groove or depression formed in the plug 25when said plug is in the position illustrated in Fig. 3. The outer endof the bore 43 is enlarged somewhat and screw-threaded to allow a pipe44 to be connected thereto.

The outer periphery of the boss 42 is screwthreaded to allow astuffing-box, such as 45, to be connected thereto, so as to form asteamtight joint between said boss and the pipe 44.

For connecting the lubricator with a steampipe, the upper end thereof isconnected bya pipe 2l, in the manner hereinbefore stated, and theopposite end of the pipe 44 from the lubricator is connected to anoil-tank 45 in the manner now to be described. Said oiltank can be ofany ordinary construction and size, and the upper end 4G thereof isprovided with a cylindrical projection 47 adjacent its center andextending upward therefrom a suitable distance to allow said pipe 44 tobe connected by means of a stuffing-box 48, the interior of said piperegistering with the interior of said cylindrical projection.

A suitable Opening is formed in the upper end of the cylindricalprojection 47 to allow a steam-pipe 49 to pass through it, saidcylindrical projection being a suitable size larger than the pipe 49 sothere will be an annular space 50 around said pipe within saidcylindrical projection, the lower portion of said annular spaceregistering with the interior of the tank 45. The pipe 49 extends downwithin the tank 45 and terminates a short distance above the lower endof said tank.

The pipe 49 is connected to a pipe 5l which leads to and is connected tothe steam-pipe 22 by a coupling 52, and a stop-cock 53 is locatedbetween the upper end of the pipe 49 and the coupling 52 for shuttingoif the iiow of steam into the tank 45.

A suitable opening is formed in the cover 46 of the tank 45 to allowsaid tank to be filled with oil, said opening being closed by a suitableplug 54.

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As the tank 45 is stationary, it is provided with a suitable bracket 55,so that it can be connected to any suitable stationary object.

56 indicates a petcock, which is connected to the lower end of the tank45 immediately beneath the lower end of the pipe 49, so that sedimentthat may collect within the tank can be drawn off.

In the practical operation of my invention, assuming the tank 45 isfilled with oil and the steam-pipe 22 is connected to an ordinarysteam-supply, and the valve-stein 32 is screwed down so as to allowaspace between the upper end thereof and the valve-seat 35, steam passingthrough the pipes 5l and 49 will carry the oil through the pipe 44 intothe annular depression 40 in the plug 25, and thence through the radialopenings 41 .into the annular space around the upper end of thevalve-stem, and thence through the nozzle 37 into the sighttube l2 (itbeing filled with water) through the bore 17 and the radial openings 16into the pipe 21, and thence into the steam-pipe 22 which leads to thecylinder or other object which is desired to be lubricated. The flow ofoil and condensed steam through the lubricator is regulated by thestop-cock 53 and the valve-stem 32.

An improved sight-feed lubricator,compris ing a rectangular frame havingsight-spaces in the sides thereof and vertical bores centrally locatedin the end portions thereof, a sight-tube tted within said bores andconnectng the same, plu-gs having central bores, annular depressions,and radial ports leading from the annular depressions to the saidcentral bores, mounted in the vertical bores of the frame, ports ofcommunication leading outwardly from said annular depressions to theexterior of the frame, a pipe communicating with one of said ports ofcommunication and the steam-cylinder, and a pipe leading from the otherof said ports of communication to an oil-tank, a valve-stem located in,and adapted to close, the bore in the lower end of the said frame, and anozzle leading from the bore in the lower end of the said frame into theinterior of the said tube, substantially as shown and described, and forthe purposes stated.

In testimony whereof I affix my signature in presence of two witnesses.

I-IAVILAH G. BROVN.

WVitnesses E. E. LONGAN, JNO. C. HIGDoN.

